The purpose of this document is to provide a detailed method for troubleshooting dialin modems. The problem is "My remote workstation doesn't connect to the host. How do I make the two modems talk?"

When you configure a modem for remote access per the CCI instructions, you are setting it up to provide a valid DCD signal. Therefore, to test a modem, we must provide it with a valid DTR signal. To reduce the possible variables involved, we'll test the modem under DOS, using the COMS utility.

Boot DOS on the main computer and bring up COMS. Then dial into the host computer; this will provide a valid DTR. If the modem answers when you dial in (you can tell if it has answered by listening to the sound of the modems "talking" and by the lights on your modem) then load Concurrent on the host computer with the LOADSYS command. The connection will be maintained, and you should next see part or all of the Concurrent signon at your remote station.

Note: The DCD line shown in COMS under DOS should be inactive until the connection is made.

If you don't get any signon, then bring up COMS and hit an ENTER key. COMS should reflect 9C if the character is received; if COMS shows 00, check the port that you are dialing into. It's possible that the port you are a)dialing into or b)dialing from (on the CCITERM computer) is not the port you think it is.

If you find that the port you are dialing into is NOT defined as a multiuser terminal but as a printer/aux port you can use TAKEOVER with the remote option to gain access to the system if there is an available PC terminal. Do not disconnect, but have someone enter TAKEOVER aX R at the PC terminal prompt. As soon as that has been entered, you will be "sharing" the display of the PC terminal at which TAKEOVER was entered. You can now proceed to do your remote setup, support and diagnostics